General code cleanups

* Use default member initializers
* Use range-based loops
* Don't use 'else' after 'return'
* Removed some unused includes
* Construct empty strings with std::string() instead of ""
* Clear strings with .clear() instead of assigning ""
* Check whether strings are empty with .empty() instead of comparing to ""
* Removed redundant initializations

1 files changed, 2 insertions, 2 deletions

diff --git a/src/sprite.h b/src/sprite.h
index 3af6eb7c..8eb366d6 100644
--- a/src/sprite.h
+++ b/src/sprite.h
@@ -32,7 +32,7 @@ const int DEFAULT_FRAME_DELAY = 75;
 class Sprite
 {
     public:
-        virtual ~Sprite() {}
+        virtual ~Sprite() = default;
 
         /**
          * Resets the sprite.
@@ -114,7 +114,7 @@ class Sprite
         virtual int getDuration() const = 0;
 
     protected:
-        float mAlpha;                  /**< The alpha opacity used to draw */
+        float mAlpha = 1.0f;        /**< The alpha opacity used to draw */
 };
 
 #endif // SPRITE_H